Is bud disappointed to learn that Herman Calloway is not his father but his grandfather?

Yes, Bud is initially disappointed to learn that Herman Calloway is not his father but his grandfather. This revelation complicates his quest for identity and belonging, as he had hoped to find a direct paternal connection. However, as the story unfolds, Bud begins to understand the importance of family ties and the potential for new relationships, which helps him navigate his feelings of disappointment. Ultimately, it leads to a deeper exploration of his family's history and love.